1 Pair 24AWG Cross Connect Wire (1000ft spool)
24 AWG solid bare annealed copper; Flame-retardant semi-rigid PVC; 4 twist per foot; Suitable for voice and data transmission up to 16 Mbps; For cross-connecting between terminals of a distribution frame or other premise equipment; Bellcore specification TA-TSY-000130; Category 3 compatible

Cross connect cable and wire is most commonly used with a
66 Block